How am I gonna explain this?

I just turned 18 yesterday and we have a family friend that i have a crush on who’s 29... Literally he’s so hot and funny. Yesterday when he came for my birthday i confessed my feelings for him. He told me that he wants me too but we can't because it’d be too weird because of the age gap and he’d feel bad. Then i kissed him and he didn't stop me he kissed me back. But he told me that its all and we can't do anything without telling my family. What am i gonna do?
How am I gonna explain this?
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